On 7/22/07, Tobias Gogolin wrote: > > Where I found about 5 differently drawn but identical (as far as I can tell > from putting them side by side for a few minutes) JDM versions, > the PIPO (one transistor) and the RCD which has a Status LED which I like... > > What should I know about building one to program the 18LF4320 involved in my > solar tracker design? > I would like it especially if there was a circuit that could be easily > converted to also do serial communication with the chip later! > Thanks for any pointers! JDMs may have its usage last time. Not now. They are junk now. You can buy PICkit 2 for US$35 and as of version 2.4, it supports UART emulation. It supports almost all Flash PIC12F/16F/18F and PIC24/dsPICs. Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist